Sullivan County, Pennsylvania Demographics 2026

Population Overview

Sullivan County is located in Pennsylvania with a total population of 5,849. It is the 66th most populous county out of 67 in Pennsylvania. The county encompasses 4 Census-designated places.

Age Demographics

The median age in Sullivan County is 56.1 years. This is 37% higher than the state median of 40.9 years. Only 10.2% of residents are under 18, indicating fewer families with children. 12.5% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Sullivan County is $64,758. This is 15% lower than the state median of $76,081. Compared to the national median of $78,538, household income here is 18% lower. The poverty rate stands at 11.0%. This is 7% lower than the state poverty rate of 11.8%. The unemployment rate is 6.4%. This is 22% higher than the state rate of 5.3%. The median home value is $186,400. Housing costs are 22% lower than the state median of $240,500. With a home-value-to-income ratio of just 2.9x, Sullivan County is one of the most affordable housing markets in the area. 83.2% of occupied housing units are owner-occupied. This homeownership rate is 20% higher than the state average of 69.3%.

Race & Ethnicity

Sullivan County has a predominantly White (non-Hispanic) population, comprising 93.8% of all residents. Black or African American residents account for 2.2%. The Black or African American population (2.2%) is well below the state average of 10.3%. The Hispanic or Latino population (2.0%) is well below the state average of 8.4%.

Education

19.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 43% lower than the state rate of 34.5%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 91.8%.